Warmest October on record for Hong Kong

Mainly due to a weaker-than-normal northeast monsoon and a stronger-than-normal upper-air anticyclone over southern China, and set against the backdrop of climate warming and a very strong El Niño event that may persist into early next year, October 2026 was unseasonably warm in Hong Kong. The monthly mean maximum temperature of 30.5 degrees, monthly mean temperature of 27.6 degrees and monthly mean minimum temperature of 25.8 degrees were 2.4 degrees, 1.9 degrees and 1.9 degrees above their respective normals and all were the highest ever on record for October. The month was also drier than usual with a total rainfall of 81.0 millimetres, about 67 per cent of the normal of 120.3 millimetres. The accumulated rainfall this year up to October was 2532.9 millimetres, about seven per cent above the normal of 2363.1 millimetres for the same period. Winds were weak over the coast of Guangdong on the first day of the month. Locally, it was mainly fine and very hot apart from isolated showers. Under weak winds and with plenty of sunshine, the temperature at the Observatory rose to a maximum of 33.6 degrees that afternoon, the highest of the month. The weather conditions, however, changed m

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